﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;
using System.IO.IsolatedStorage;
using BankProject.Strings;
using BankProject.ViewModels;
using System.Runtime.Serialization;
using System.IO;

namespace BankProject
{
    public partial class App : Application
    {
        public readonly static IsolatedStorageSettings settings = IsolatedStorageSettings.ApplicationSettings;

        public static MainViewModel ViewModel
        {
            get;
            private set;
        }

        public static IsolatedStorageFile Store { get; private set; }

        public static Random random { get; private set; }
        /// <summary>
        /// Provides easy access to the root frame of the Phone Application.
        /// </summary>
        /// <returns>The root frame of the Phone Application.</returns>
        public PhoneApplicationFrame RootFrame { get; private set; }

        /// <summary>
        /// Constructor for the Application object.
        /// </summary>
        public App()
        {
            //MetroGridHelper.IsVisible = true;
            //MetroGridHelper.Opacity = 0.05;
            //Thread.CurrentThread.CurrentCulture = new CultureInfo("ru-RU");
            //Thread.CurrentThread.CurrentUICulture = new CultureInfo("ru-RU");

            // Global handler for uncaught exceptions. 
            UnhandledException += Application_UnhandledException;

            // Standard Silverlight initialization
            InitializeComponent();

            // Phone-specific initialization
            InitializePhoneApplication();

            // Show graphics profiling information while debugging.
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // Display the current frame rate counters.
                Application.Current.Host.Settings.EnableFrameRateCounter = true;

                // Show the areas of the app that are being redrawn in each frame.
                //Application.Current.Host.Settings.EnableRedrawRegions = true;

                // Enable non-production analysis visualization mode, 
                // which shows areas of a page that are handed off to GPU with a colored overlay.
                //Application.Current.Host.Settings.EnableCacheVisualization = true;

                // Disable the application idle detection by setting the UserIdleDetectionMode property of the
                // application's PhoneApplicationService object to Disabled.
                // Caution:- Use this under debug mode only. Application that disables user idle detection will continue to run
                // and consume battery power when the user is not using the phone.
                PhoneApplicationService.Current.UserIdleDetectionMode = IdleDetectionMode.Disabled;
            }

        }

        // Code to execute when the application is launching (eg, from Start)
        // This code will not execute when the application is reactivated
        private void Application_Launching(object sender, LaunchingEventArgs e)
        {
            random = new Random();

            Store = IsolatedStorageFile.GetUserStoreForApplication();

            ViewModel = new MainViewModel();
        }

        // Code to execute when the application is activated (brought to foreground)
        // This code will not execute when the application is first launched
        private void Application_Activated(object sender, ActivatedEventArgs e)
        {
            Store = IsolatedStorageFile.GetUserStoreForApplication();

            if (!e.IsApplicationInstancePreserved)
            {
                random = new Random();

                if (PhoneApplicationService.Current.State.ContainsKey(Constants.MainViewModel) && PhoneApplicationService.Current.State[Constants.MainViewModel] != null)
                {
                    ViewModel = (MainViewModel)PhoneApplicationService.Current.State[Constants.MainViewModel];

                    ViewModel.UnTombstoned();
                }
                //else if (settings.Contains(Constants.MainViewModel))
                //{
                //    ViewModel = (MainViewModel)settings[Constants.MainViewModel];

                //    ViewModel.UnTombstoned();
                //}
                else
                {
                    try
                    {
                        if (Store.FileExists(Constants.MainViewModelXml))
                        {
                            DataContractSerializer Serialization = new DataContractSerializer(typeof(MainViewModel));

                            using (var sourceStream = Store.OpenFile(Constants.MainViewModelXml, FileMode.Open))
                            {
                                ViewModel = (MainViewModel)Serialization.ReadObject(sourceStream);
                            }
                        }
                        else
                        {
                            ViewModel = new MainViewModel();
                        }
                    }
                    catch (Exception ex)
                    {
                        ViewModel = new MainViewModel();
                    }
                }

            }
            else
            {
                ViewModel.UnDormant();
            }
        }

        // Code to execute when the application is deactivated (sent to background)
        // This code will not execute when the application is closing
        private void Application_Deactivated(object sender, DeactivatedEventArgs e)
        {
            ViewModel.Deactivated();

            PhoneApplicationService.Current.State[Constants.MainViewModel] = ViewModel;
            //settings[Constants.MainViewModel] = ViewModel;

            try
            {
                DataContractSerializer Serialization = new DataContractSerializer(typeof(MainViewModel));
                using (var targetFile = Store.CreateFile(Constants.MainViewModelXml))
                {
                    Serialization.WriteObject(targetFile, ViewModel);
                }
            }
            catch (Exception ex)
            { }

            settings.Save();
        }

        // Code to execute when the application is closing (eg, user hit Back)
        // This code will not execute when the application is deactivated
        private void Application_Closing(object sender, ClosingEventArgs e)
        {
            settings.Save();
        }

        // Code to execute if a navigation fails
        private void RootFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
        {
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // A navigation has failed; break into the debugger
                System.Diagnostics.Debugger.Break();
            }
        }

        // Code to execute on Unhandled Exceptions
        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // An unhandled exception has occurred; break into the debugger
                System.Diagnostics.Debugger.Break();
            }
        }

        #region Phone application initialization

        // Avoid double-initialization
        private bool phoneApplicationInitialized = false;

        // Do not add any additional code to this method
        private void InitializePhoneApplication()
        {
            if (phoneApplicationInitialized)
                return;

            // Create the frame but don't set it as RootVisual yet; this allows the splash
            // screen to remain active until the application is ready to render.
            RootFrame = new PhoneApplicationFrame();
            RootFrame.Navigated += CompleteInitializePhoneApplication;

            // Handle navigation failures
            RootFrame.NavigationFailed += RootFrame_NavigationFailed;

            // Ensure we don't initialize again
            phoneApplicationInitialized = true;
        }

        // Do not add any additional code to this method
        private void CompleteInitializePhoneApplication(object sender, NavigationEventArgs e)
        {
            // Set the root visual to allow the application to render
            if (RootVisual != RootFrame)
                RootVisual = RootFrame;

            // Remove this handler since it is no longer needed
            RootFrame.Navigated -= CompleteInitializePhoneApplication;
        }

        #endregion
    }
}